package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.exception.SetmealEnableFailedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
@Slf4j
public class SetmealServiceImpl implements SetmealService {

    @Autowired
    private SetmealMapper setmealMapper;

    @Autowired
    private SetmealDishMapper setmealDishMapper;

    @Autowired
    private DishMapper dishMapper;
    @Transactional
    @Override
    public void saveWithDish(SetmealDTO setmealDTO) {

        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        setmeal.setStatus(StatusConstant.ENABLE);
        System.out.println("套餐状态："+setmeal.getStatus());

        setmealMapper.insert(setmeal);

        Long setmealId = setmeal.getId();

        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        if (setmealDishes!=null && setmealDishes.size()>0){
            setmealDishes.forEach(setmealDish -> {
                setmealDish.setSetmealId(setmealId);
            });
            setmealDishMapper.insertBatch(setmealDishes);
        }

    }

    @Override
    public PageResult queryPage(SetmealPageQueryDTO setmealPageQueryDTO) {
        //使用分页插件查询
        PageHelper.startPage(setmealPageQueryDTO.getPage(),setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> page= setmealMapper.queryPage(setmealPageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());
    }


    @Transactional
    @Override
    public void deleteBitch(List<Long> ids) {

        for (Long id : ids) {
            Setmeal setmeal=setmealMapper.getById(id);
            if(setmeal.getStatus()==StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        }

        for (Long id : ids) {
            setmealMapper.deleteById(id);
            setmealDishMapper.deleteDishBySetmealId(id);
        }
    }

    @Override
    @Transactional
    public void updateWithDish(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        setmealMapper.update(setmeal);
        //删除原有的菜品数据
        setmealDishMapper.deleteDishBySetmealId(setmealDTO.getId());

        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();

        if(setmealDishes!=null && setmealDishes.size()>0){
            setmealDishes.forEach(setmealDish ->
                    setmealDish.setSetmealId(setmealDTO.getId()
                    ));
            setmealDishMapper.insertBatch(setmealDishes);
        }
    }

    @Override
    public SetmealVO getByIdWithDish(Long id) {

        Setmeal setmeal = setmealMapper.getById(id);

        List<SetmealDish> setmealDishes = setmealDishMapper.getBySetmealId(id);

        SetmealVO setmealVO = new SetmealVO();

        BeanUtils.copyProperties(setmeal,setmealVO);

        setmealVO.setSetmealDishes(setmealDishes);

        return setmealVO;


    }

    @Override
    public void startOrStop(Integer status, Long id) {
        if (status==StatusConstant.ENABLE){
            List<Dish> dishList=dishMapper.getBySetmealId(id);
            for (Dish dish : dishList) {
                if (dish.getStatus()==StatusConstant.DISABLE){
                    throw new SetmealEnableFailedException(MessageConstant.SETMEAL_ENABLE_FAILED);
                }
            }
        }

        Setmeal setmeal = Setmeal.builder().status(status).id(id).build();
        setmealMapper.update(setmeal);

    }

    /**
     * 根据分类id查询套餐
     * @param setmeal
     * @return
     */
    @Override
    public List<Setmeal> list(Setmeal setmeal) {
       List<Setmeal> list=setmealMapper.list(setmeal);
       return list;
    }


    /**
     * 根据套餐id查询包含的菜品列表
     * @param id
     * @return
     */
    @Override
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemById(id);
    }

}
